saga/seata-saga-statelang/src/main/java/io/seata/saga/statelang/parser/StateParserFactory.java
<filename>saga/seata-saga-statelang/src/main/java/io/seata/saga/statelang/parser/StateParserFactory.java/*
 *  Copyright 1999-2019 Seata.io Group.
 *
 *  Licensed under the Apache License, Version 2.0 (the "License");
 *  you may not use this file except in compliance with the License.
 *  You may obtain a copy of the License at
 *
 *       http://www.apache.org/licenses/LICENSE-2.0
 *
 *  Unless required by applicable law or agreed to in writing, software
 *  distributed under the License is distributed on an "AS IS" BASIS,
 *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 *  See the License for the specific language governing permissions and
 *  limitations under the License.
 */
package io.seata.saga.statelang.parser;

import java.util.Map;
import java.util.concurrent.ConcurrentHashMap;

import io.seata.saga.statelang.domain.DomainConstants;
import io.seata.saga.statelang.parser.impl.ChoiceStateParser;
import io.seata.saga.statelang.parser.impl.CompensateSubStateMachineStateParser;
import io.seata.saga.statelang.parser.impl.CompensationTriggerStateParser;
import io.seata.saga.statelang.parser.impl.FailEndStateParser;
import io.seata.saga.statelang.parser.impl.ScriptTaskStateParser;
import io.seata.saga.statelang.parser.impl.ServiceTaskStateParser;
import io.seata.saga.statelang.parser.impl.SubStateMachineParser;
import io.seata.saga.statelang.parser.impl.SucceedEndStateParser;

/**
 * A simple factory of state parser
 *
 * @author lorne.cl
 */
public class StateParserFactory {

    protected static Map<String, StateParser> stateParserMap = new ConcurrentHashMap<>();

    static {
        stateParserMap.put(DomainConstants.STATE_TYPE_SERVICE_TASK, new ServiceTaskStateParser());
        stateParserMap.put(DomainConstants.STATE_TYPE_CHOICE, new ChoiceStateParser());
        stateParserMap.put(DomainConstants.STATE_TYPE_COMPENSATION_TRIGGER, new CompensationTriggerStateParser());
        stateParserMap.put(DomainConstants.STATE_TYPE_FAIL, new FailEndStateParser());
        stateParserMap.put(DomainConstants.STATE_TYPE_SUCCEED, new SucceedEndStateParser());
        stateParserMap.put(DomainConstants.STATE_TYPE_SUB_STATE_MACHINE, new SubStateMachineParser());
        stateParserMap.put(DomainConstants.STATE_TYPE_SUB_MACHINE_COMPENSATION,
            new CompensateSubStateMachineStateParser());
        stateParserMap.put(DomainConstants.STATE_TYPE_SCRIPT_TASK, new ScriptTaskStateParser());
    }

    public static StateParser getStateParser(String stateType) {

        return stateParserMap.get(stateType);
    }
}